point = int(input())
if point>= 400 and point <= 599:
  print('8')
elif point >= 600 and point <= 799:
  print('7')
elif point >= 800 and point <= 999:
  print('6')
elif point >= 1000 and point <= 1199:
  print('5')
elif point >= 1200 and point <= 1399:
  print('4')
elif point >= 1400 and point <= 1599:
  print('3')
elif point >= 1600 and point <= 1799:
  print('2')
elif point >= 1800 and point <= 1999:
  print('1') point = int(input()) point int(input()) int input() input if point>= 400 and point <= 599:
  print('8')
elif point >= 600 and point <= 799:
  print('7')
elif point >= 800 and point <= 999:
  print('6')
elif point >= 1000 and point <= 1199:
  print('5')
elif point >= 1200 and point <= 1399:
  print('4')
elif point >= 1400 and point <= 1599:
  print('3')
elif point >= 1600 and point <= 1799:
  print('2')
elif point >= 1800 and point <= 1999:
  print('1') point>= 400 and point <= 599 point>= 400 point 400 point <= 599 point 599 print('8') print '8' elif point >= 600 and point <= 799:
  print('7') point >= 600 and point <= 799 point >= 600 point 600 point <= 799 point 799 print('7') print '7' elif point >= 800 and point <= 999:
  print('6') point >= 800 and point <= 999 point >= 800 point 800 point <= 999 point 999 print('6') print '6' elif point >= 1000 and point <= 1199:
  print('5') point >= 1000 and point <= 1199 point >= 1000 point 1000 point <= 1199 point 1199 print('5') print '5' elif point >= 1200 and point <= 1399:
  print('4') point >= 1200 and point <= 1399 point >= 1200 point 1200 point <= 1399 point 1399 print('4') print '4' elif point >= 1400 and point <= 1599:
  print('3') point >= 1400 and point <= 1599 point >= 1400 point 1400 point <= 1599 point 1599 print('3') print '3' elif point >= 1600 and point <= 1799:
  print('2') point >= 1600 and point <= 1799 point >= 1600 point 1600 point <= 1799 point 1799 print('2') print '2' elif point >= 1800 and point <= 1999:
  print('1') point >= 1800 and point <= 1999 point >= 1800 point 1800 point <= 1999 point 1999 print('1') print '1' point = int(input()) int(input()) point
point = int(input())
if point>= 400 and point <= 599:
  print('8')
elif point >= 600 and point <= 799:
  print('7')
elif point >= 800 and point <= 999:
  print('6')
elif point >= 1000 and point <= 1199:
  print('5')
elif point >= 1200 and point <= 1399:
  print('4')
elif point >= 1400 and point <= 1599:
  print('3')
elif point >= 1600 and point <= 1799:
  print('2')
elif point >= 1800 and point <= 1999:
  print('1')